Electrically-protected structure.



Nt).v 708,093.

H. M. SUTTON, W. L. STELE & M. CUERVEB. ELEGTBICALLY PROTECTED STRUCTURE.'

(Application led A'ug. 19, 1901.) o Model.)

Patented Sept. 2, |902.

B YW

/NVE/V TORS UNITED STATES PATENTA EEICE.

HENRY M. SUTTON, WALTER L. STEELE, AND MICHAEL COERVER, OF

' DALLAS,

TEXAS. Y

ELECTRlCALLY-PROTECTAED STRUCTU RE.

`SIEECI}3`I0.A.T1ION forming part of Letters Patent No.-708,093, dated September2, 1902. Original application ledMay 25, 1901, Serial No. 61,923. Divided and this application led August 19. 1901. Serial To @ZZ whom t may concern.:

Beit known that We,I HENRY M. SUTTON, WALTER L. STEELE, and MICHAEL CoEEvEE, citizens of the United States, residing 'at- Dallas, in the county of Dallas, State of Texas, have invented certain new and useful Improvements in 'Electrically-Protected Structures, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to an electricallyprotected structure, and particularly to a structure embodying a series of current-conducting wires superposed in their relation to each other.

The invention has for its object to improve the construction of electrically protected structures and is a division of our application for electric alarm system filed May 25th, 1901, Serial No. 61,923.

A further object of the invention is to vprovide an improved method of Wiring such a structure, whereby the Wires are held in position in such relation to each other that'any effort to cut or tamper with the same will vary the current strength and actuate an alarm mechanism of any desired character, y

tion will hereinafter appear in the following description and the novel features thereof will be particularly pointed out in the appended claims.

Inthe drawings, Figure l is a perspective of material prepared for the receptionof the protecting-wires. Fig. vv2 is a horizontal section through a protected structuresimilarly wired. Fig. 3 is a diagrammatic plan showing the system of wiring at right angles to each other and obliquelyfto each of the firstmentioned Wiring. Fig. 4 isan enlarged detail indicating this method of wiring; and Fig. 5 is a detail perspective with parts broken away to illustrate the several wirings independently embodied in'layers of suitable plastic material, so as to be insulated from each other.

Like characters of reference indicate like ing at an angle to each other.

(No model.)

Vparts-throughout the severaliigures ofY the 5o Vfoundation for the structure is provided with a series of grooves of different depths extend- Forinstance, the groove 86 is of the greatest depth andextends parallelr with one end of the block. The groove 84 is of less depththan groove 86 6o and extends at a right angle thereto, while the grooves 85 are of less depth. than the grooves 84 and extended ob-liquely to both of said grooves. As will be seen by the perspective view in Fig. l, each set ofthese grooves 65 is -composed of parallel grooves, so as to receive and contain the wires forming the protection for the structure. This is more fully -shown in Fig. 2, wherein the wire 55b is shown in the uppermost groove, 55in the next lower 7o groove, and 55Cin the deepest groove,the space l betweeneach layer of these wiresbeing suitably lled with insulating material and the whole being coated with glue or other desired substance, as shown at 73a, for the purpose 7 5 of protecting the embedded wires from atmospheric changes or otherconditions adapted toaect the velectrical relation of the same.

`This system of wiring is more fully shown by the diagram in Fig. 3, Where it may b e seen 8o that the wires in their superposed position form a practically continuous mesh, so that any attempt to cut through or disturb the wiredsurface of the protected structure will immediately cut or short-circuit the wiresf85 and produce the alarm. In this figure `it will be observed that the wire 55a extends in continuous circuit longitudinally of thestruccuit for the structure is indicated at E,while at F one wall of the protected vault or cabinet is shown and adapted to be placed in circuit with other walls or sections G, H, and I, there being a continuous current or circuit through the several parts, as is customary in this art. The wiring when embodied in the sawed block and coated with insulating material forms practically three layers contain-n ing protecting-circuits, and, if desired, these layers may be composed 'in other manners than by the sawing of the block, as shown in Fig. l. For instance, in Fig. 5 the circuit 55c may be inclosed in one layer of insulating material, circuit 55 in another superposed layer, and the circuit 55b in an independent layer above the other circuits, the Whole being protected by a covering 73, as shown by sectionin Fig. 2. In this latter tigurea springcontact 76 has been shown which permits the use of a door to the cabinet or vault, which when closed establishes a continuous circuit from the center of resistance to the'eXit of the structure, whereby the opening of the door alone breaks the circuit and sounds an alarm when the current is on. This springcontact may comprise a bolt 76, as shown, located in a casing 74in circuit with the several circuit-wires, while the bolt under tension of the spring 75 is pressed into contact with the plate 77, likewise in circuit with the wires upon the side wall of the cabinet.

As disclosing one means for establishing and shifting circuits through the current-conducting wires and changing the polarity thereof, we have shown at the right of Fig. 4 a main-line battery 89, having the circuit therefrom branched or splitat 94, one circuit of which passes through a compensating resistance 95 and is wound upon a magnet 93, as shown by coil 100. The other branch of the circuit startingr from the point 94 proceeds through one of the line-wires 94 to the contact 4 ofthe circuit-changer and shifting device 4, thence through any one of the lineuires 52 52b 52c to the protected structure, from which it returns tothe currentchanger 4, thence from contact 4l to the return-wire 94", passing through the coil 100 in a reverse direction to the previous winding and connected tothe circuit-wire 110, as shown. The condenser 9o' is placed between the wires 94n and 94h in order to take up the back pressure and preventsparkingat the brushes upon the current-shift; but all of theparts herein mentioned have been more fully described and claimed in our application above referred to, of which the present application is a divi- Sion.

Having described our invention, what we claim is- 1. In an electrical alarm system, a Wiring for a protected structure comprising a series of wires each composingan independent circuit, one of saidseries extending at a right angle to the other and the third series intersectin g diagonally the spaces between the first two series of wires; substantially as specified.

2. A'Wiring for a protected structure comprising a block or body having on one face intersecting kerfs or grooves therein extending at a right angle to each other and of diiferent depths, and an electrical conductor in each of said kerfs or grooves; substantially as speciiied.

3. A wiring for a protected structure comprising a block or body having intersecting kerfs or grooves therein ot' different depths, andan electrical conductor in each of said kerfs or grooves; substantially as specified.

4. Inv an electrical alarm system, a cabinet or apartment having the several walls or surfaces thereof provided with intersecting grooves of different depths lined by superposed insulated electrical conductors in continuous circuit; substantially as specified.

5. In an electrical alarm system, a cabinet or apartment having the several walls or surfaces thereof provided With intersecting grooves ot` different depths lined by superposed electrical conductors in continuous circuits, and insulated material for embedding;r each layer of said conductors; substantially as specified.

6. An electrical alarm system, a block or body having a series of grooves therein of ditterentdepthsextendingat right angles to each other and diagonally across the spaces between the right-angle grooves, circuit-wires located in said grooves and insulated from each other, and means for establishing circuits through said wires, substantially as specified.

In testimony whereof we afiix our signatures in presence of two witnesses.

IIENRY M. SUTTON. XVALTER L. STEELE. MICHAEL COERVER.y Witnesses:

Wu. D. SHOEMAKER, E. J. BEvERsToCK.

IOO 

